Cyber Engine Tweaks (CET)

Name: Cyber Engine Tweaks (CET)
Author: CET contributors

Adds a Lua console and overlay used by CET-based mods. Install it when your selected mod requires CET.

By CET contributorsCheck release

Who it is for: Players installing Lua-based mods or using the CET console.

Before you download

Platforms: PC
Installation: Author release archive
Release reviewed: 1.38.1
Sources checked: 2026-10-26

Check the chosen release against your installed game patch.

Author listing at the source-check date. This version is a reference snapshot, not a tested combination with every other mod.

Release evidence

Evidence type: Author documentation · not game tested
Sources checked: 2026-10-26
Reviewed mod release: 1.38.1 ↗
Author-documented game patch: Not recorded

Within the 30-day review window · Review due 2026-11-25

The tagged README requires RED4ext, but does not name a supported game patch. Check the release for your installed patch.

Installation version requirements: RED4ext Version not specified

Read the reviewed source ↗

These records do not certify a working combination or verify your installed files.

What changes

Lua console and mod scripting
Configurable overlay key

Using it in your game

On first launch, assign a key to the CET overlay. Use that same key to open the console and the interfaces supplied by participating Lua mods.

If the overlay does not appear, check the author’s window-mode and overlay guidance before reinstalling unrelated frameworks. The CET log is under bin/x64/plugins/cyber_engine_tweaks.

Before you choose

A framework, not a graphics preset. Its Windows DLL loader cannot be installed through the console mod.io browser.

Requirements

RED4ext
Loads native plugins used by frameworks such as ArchiveXL and Codeware. REDmod is a separate tool.
Microsoft Visual C++ Redistributable (x64)
Windows runtime needed by the native loader. Install the x64 package linked by the author.

Open this mod and its tracked prerequisites together. External runtimes still need your confirmation.

Open the dependency plan →

Install and check

Install RED4ext first, as required by the CET 1.38.1 README. Download a CET release matching your game patch from the author’s releases, not the source-code archive.
Extract into the Cyberpunk 2077 game root, merging the included bin folder.
Confirm bin/x64/version.dll and the CET plugin files are present; avoid a second nested bin folder.
Launch the game and assign an overlay key. Follow the author’s troubleshooting notes if it does not appear.

How to check the result

Bind the overlay key on first launch, open the console, and inspect the CET log if it fails.

Try this check before adding another mod, so a failure points to the change you just made.

Mods that use Cyber Engine Tweaks (CET)

These directory entries name this mod as a prerequisite. Install only the content you want and follow each author’s release requirements.

Native Settings UI
Gives compatible CET mods a native-style settings menu with controller support.

Update or roll back

Use the author’s uninstall instructions for the installed release. Restore a clean save if your modded save depends on removed content. Keep shared frameworks used by other mods.

Game not launching? Follow the recovery checklist →

Questions about Cyber Engine Tweaks (CET)

How do I open the CET overlay?

Assign an overlay key when CET first launches, then use that key again. If the first-launch prompt does not appear, check the installation path, game-window mode and overlay guidance in the author documentation.

Does CET replace RED4ext?

No. CET provides a Lua console and scripting environment; RED4ext loads native plugins. Install the framework named by each mod rather than treating the two as interchangeable.

Sources and release notes

Editorial summary by CyberpunkMods. Read our review method or report a correction.

Related mods

Core Frameworks